Binding-band for armatures



2 Sheets-Sheet 2.

(No Model.)

H. G. REIST.

BINDING BAND FOR ARMATURES.

Patented Feb. 16,1897.

UNITED STATES PATENT OFFICE.

HENRY G. REIST, 0F SCI'IENEOTADY, NEIV YORK, ASSIGNOR TO THE GENERALELECTRIC COMPANY, OF NEW YORK.

BINDING-BAND FOR ARMATU RES.

SPECIFICATION forming part of Letters Patent No. 577,148, dated February16, 1897.

A li ation filed November 18, 1896. $erial No. 612,606. (No model.)

To all whom it may concern:

Be it known that I, HENRY G. REIST, a citizen of the United States,residing at Schenectady, in the county of Schenectady, State of NewYork, have invented certain new and useful Improvements in Binding-Bandsfor Armatures, (Case No. 440,) of which the following is aspecification.

The present invention has for one of its objects to provide a wirebinding-band for armatures which can be removed when desired withoutimpairing its usefulness, this being especially desirable, for with allother wire bands with which I am familiar it is necessary to cut andthus destroy the band in order to remove it.

The invention further has for its object to provide a binding-bandsimple in construction, flexible, yet at the same time possessing greattensile strength, and one comprising a number of sections, each sectionmade of a single piece of wire.

The invention further relates to the means employed for securing theends of the band or its sections together. It also relates to the toolemployed for drawing the ends together.

In carrying out the invention a form or holder is provided upon whichthe sections are wound. Each section consists of a single piece of wirewound in such a manner that loops are provided at the ends. The sectionsare then assembled or mounted on the armature, the loops of wire in theends of one section extending between those in the adjacent section.After the sections have been assembled keys are inserted in the spacesformed by the overlapping ends of the adjacent sections and held thereinby any suitable means, as riveting over the ends, for example. To drawthe ends of the sections together, a special tool is provided,consisting of two arms having teeth at their lower extremities adaptedto fit between the wires near the loops and engage with space-blockswhich are soldered to the wire, after which the arms are drawn togetherby means of a bolt.

In the accompanying drawings, attached to and made a part of thisspecification, Figure 1 is a partial end View of an armature. Fig. 2 isa side view of a binding-band. Fig. 3 is a plan view of the same. Fig. 4is a sectional view of one of the spacing-blocks, taken on line 4 4 ofFig. 2. Figs. 5 and 6 are respectively side and end views of theassemblingtool. Fig. '7 is an end view of an armature provided with abinding-band, and Fig. 8 is a machine which may be used for making thebands.

The laminated structure B is secured to the spider-arm O of the armaturein any suitable manner, preferably by a dovetailed construction, asshown. The laminated portion B is provided with a number of slots inwhich are located conductors D. The bands are made of wire and are woundin the manner shown in Fig. 8. Mounted upon a face-plate K is a frame L,provided with extensions at its ends, in which is mounted a shaft M.Mounted upon the shaft M are adjustable collars M adapted to be moved bymeans of the bolts ME The end piece 0 is parallel to the shaft M and isheld in place by means of pieces B. At the ends are provided keys 1? andP, which are released when it is desired to remove the band.

The top or outer side of the band is slightly longer than the inner sideon account of the loops formed at the ends of the sect-ions and onaccount of the space-blocks F F. The latterare employed to separate theends or loops from each other and to provide means for tightening. Thisincrease in length is ob- .tained by inserting the pieces N in theposition shown at the time the band is being wound. The space-blocks F Fare also placed in position before winding.

For straightening the wire I a frame Q is provided, having a number ofsmall grooved rollers Q. The frame Q, being rotated by the belt Q tendsto take out any irregularities in the wire and at the same time acts asa tension device. If at any time it is desired to wind the wire undergreater tension, additional friction devices are. employed.

In winding the band a single piece of wire is employed. This is firstsecured to the spaceblock F, as shown in Fig. 3, then carried to theleft around the wedges P, Fig. 8, to the.

end being soldered to the block 1 After the band has been wound with therequired num ber of turns the space-blocks I F are soldered to the wireI while mounted on the winding-frame. This insures the proper relationof the wires and the space-blocks. A fter the space-blocks F 1 aresoldered in position (best shown in Fig. 4) the wedges I I are removedand the pins knocked out of the piece It, permitting the end piece 0tobe removed, and by releasing the collar M by means of the nut on thebolt M the band can be removed. After removing the band the pieces IIare sol dered thereto at suitable intervals to hold the wires I, formingthe band, in their proper relation.

In providing binding-bands for armatures it is desirable to make theband in a number of short sections, so as to evenly distribute thetension over the armature; otherwise at the point where the ends areunited the armatureeonductors and insulation will be under considerablepressure and the portions farther away will be somewhat loose. This isvery undesirable, as it permits the conductors to move slightly, whichwould soon impair theirinsulation. In the present instance the band isshown as composed of four short sections A A N A, the number, of course,depending upon the size of the armature. In order to apply the band atthe required tension, a tool is provided, consisting of two arms .I J,having curved upper portions secured together by the bolt J The lowerextremity of each arm is provided with an enlarged portion havin g teethadapted to project between the loops or ends of the wires when mountedin position. The two arms J J are adapted to be drawn together by meansof the bolt .I

Referring to Figs. 1 and '7, the method of applying the band will bedescribed. The sections A A A are secured together by means of the keysG, which are provided with curved sides corresponding to the curvedportion of the wedges P 1?. At the point 011 the periphery where theband is to be applied insulation It is first placed in position, afterwhich the sections of the band connected by means of the keys G areplaced in position, the loops in one section alternating with those ofthe adjacent section. The band is of such length that the ends of A andA" must be drawn to gether by means of the assembling-tool before thekey G can be inserted. IVhen the ends of the band are drawn together bythe assembling-tool prior to inserting the key, the tension is somewhatgreater than the normal tension of the band. This is so that the key Gcan be readily inserted in place. The keys G furnish a simple means forcompensating for varying diameters. If the band is slightly larger thanis necessary, these keys are made a little wider. The converse of thisis true if the band is a little short.

.Vhen the band is applied to the armature and the assembling-tool isapplied at one joint, the pressure on the arm ature at this point willbe somewhat greater than at other portions of the armature; but inpractieeI have found that this tension is soon distributed over theentire armature as soon as the armature begins to rotate.

it it is desired to apply the band with an equal tension. throughout itslength, the assembling-tool can be applied to each joint and keys of theproper width inserted at each joint. After the keys G are inserted inplace the ends are expanded, which holds them in place. To remove theband, it is only necessary to reduce the size of the head on the key Gand drive it out.

A band of this construction furnishes many desirable features. First, awire band possesses the greatest tensile strength; second, it is easy toremove or replace; third, the construction is such that more turns maybe added if desired to in crease the strength without changing thedesign, and, .tcmrth, the parts used in its construction are simple andno particular skill is required in its construm tion. The machine onwhich these ban ds are wound being the invention. at another no claim ismade thereto.

\Vhat I claim as new, and. desire to secure by Letters Patent of theUnited States, .is--- 1. In a removable bi1nling-band, the combinationof a number of turns of wire, loops formed at the ends of the band, andmeans for securing the ends.

2. In a removable binding-band l'or armatures, the combination of aplurality of turns formed by a single wire, loops at the ends of theband, and space-blocks separating the ends or loops and providing meansfor attachment when it is desired to draw the ends of the band together.

In a removable binding-band .tor armatures, the combination of aplurality of turns of wire, loops formed at the ends of the band, theloops of one end alternating with. the loops of the adjacent end, andmeans for securing the ends together.

at. A removable binding-band for armatures, comprising a plurality ofturns of wire having one side slightly longer than the other, therebyproviding for the means employed. in securing the adjacent ends of thebands.

5. In a removable binding-band i'or armatures, the combination of anumber of turns of wire, space-bloeks situated near the ends of the bandto which the ends oiL' the wire are secured, and pieces soldered to theband at intervals to hold the wires in place.

(3. In a removable binding-band for armatures, the combination of aplurality of tions, each section consisting of a single piece of wirewound in such a manner that loops are formed in the ends, meansextending between the ends of the loops for securing the sectionstogether, and means secured to the wire of each section so that suitableassembling devices can be applied to the band for approximating the endsunder tension.

7. As an article of manufacture, a removable binding-band for armatures,comprising a number of loops or turns of wire wound so as to form loopsat the ends of the band with space-blocks for separating the loops andproviding means whereby a suitable assembling device can be attached tothe band when desired to apply it to an armature.

8. An assembling-tool for wire armaturebands, comprising a pair of armssecured to- IO gether at their upper ends, an enlarged lower extremityfor each arm, teeth formed in the enlarged portion and means for drawing them together.

In witness whereof Ihave hereunto set my hand this 12th day of November,1896.

HENRY G. REIST.

Witnesses:

B. B. HULL, E. W. CADY.

